Electric-line construction.



H. P. DAVIS & T. VARNEY.

ELECTRIC LINE. CONSTRUCTION.

APILIGATION FILED 5171534, 1906.

Patented. Jan. 18,1910.

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, m mugs ham WITNESSES H. P. DAVIS 6:1. VARNEY.

ELEGTBIS LINE CONSTRUCTION. APPLICATION FILED $17324, 1906 Patenteg Jan 18,1910.

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HARRY" r. nAVIs ANnrHEononE V RNEY, orirrrrsrnae, PENNSYLVANIA, ASSIGN- To all who m tt may I ITED. sT irE-s rIAg NT oFrIoE."

ORS TO WESTINGHOUSE 'ELECTRIG & MANUFACTURING COMPANY, A CORPORATION or PENNSYLVANIA.

EIQECTRIC-LINE CONSTRUCTION;

. Be it known thatwe, HARRY P. DAVIS and Tnnononn VARNEY, citizens of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania,

have invented a new and useful Improve ment in ElQCiI'IC-LIIIQ. Construction, of

. which the following is a specification. I

Our invention relates to electric line construction and particularly to a catenary form of such COHStIHCtlOII as 1s adapted for electric railway trolley lines.

The objectof our invention is to provide a line construction of the class above indicated, which shall be simple in arrangement and which shall be adapted-for use in sections where the overhead space is limited.

lVhen' it is desirable to install a double 2 messenger catenary line construction under bridges or through tunnels where the overhead space is limited, it is necessary to modify the usual arrangement so that a minimum vertical space may be required and so that the danger of grounding the messenger cables may be avoided.

According to our present invention, the messenger cables, which are usually electrically connected to the trolley wire which they support, are insulated therefrom by an improved trolley hanger and are themselves supported by a hanger which comprises an insulating cylinder mounted on a rod or tube and hung in stationary sockets proj ect-' 111g downwardly from an overhead surface.

I panying drawings, in which Figure 1 is an elevation of a section of electric trolley line arranged in accordance therewith; Figs. 2 and 3 are views of the improved trolley hanger shown in Fig. 1.

' and F igs. -11- and 5 are views of the messenan overhead surfaceby means of floor flanges 10 to which they are screww-fln-grded.

Our invention is illustrated in the accoun- Specification of Letters latent. Patented J 18,1910, A lication filed June 4,1906.- Serial No. 320,134.

The insulator 7 may becemented or other-' wise fixed to a rod or tube 11 that is detach-- ably mountedin a horizontal position by means of sleeve bearings 12 and 13 which which are adapted to receive the ends offthe have the form of T-pipe connectors, and

ports 8 and 9 is such that the rod 11 to,' which the insulator 7 is attached, may be assembled after the supports are rigidly fixed to an overhead surface and when the insulator is inposition it is prevented from slipping out of the bearings by cotter pins 14 and Y15. This construction is specially advantageous since the position of the insulator may be adjusted after-the'supports have been fastened in position and since the insulator itself may be replaced, if it' is damaged or broken, after the hanger is mounted. The outer surface of the -insu--.

lator may preferably be corrugated so that the messenger cables, which are supported by the insu.lator, may be more easily fas; tened in position at a predetermined dis tance apart. Y i

The trolley hangers 4 arepreferably located midway between. the insulating supports 6 so that the trolley construction may be flexible and each comprises a substantially triangular two-part :clamping block 16 of treated wood or other suitable insulating material. which may be'clampedto the messenger cables, and a trolley clamp 17 which is fixed to the lower member of the insulating block 16. The trolley clamp 17 comprises a U -shaped support 18, the lower. portion of which is tubular and is screw-threaded to receive a. pair of cla1nping jaws 19 and 20 that are adapted to engage grooves in the trolley conductor. desirable to separate the trolley conductor from the messenger cables by a greater dis tance, a rod or pipe 21 may be interposed between the clamp support 18 and the We claim as our invention:

1. The combination with two side-byside messenger ca les, spaced insuluating supports having circumferential grooves to receive said cables, and a trolley wire, of means for supporting the trolley wire from the cables at points between the cable supports, said 'means comprising a series of insulating blocks each of which consists of a base member having messenger-cable re cesses in its upper edge and trolley clamps attached to its lower edge, a cap member having messenger-cable recesses and bolts for clamping the two members together.

2. The combination with messenger cables, cylindrical supporting insulators having circumferential grooves to receive said cables, and a trolley wire, of means for supporting the trolley wire from the messenger cables at points between the cylindrical 1nsulators, said means comprising insulating blocks each of which consists of a lower member having a trolley clamp attached thereto, a cap member and bolts for clamping the messenger cables between said members.

In an electric line, the combination with relatively long corrugated cylindrical insulators disposed substantially in a horizontal plane and a pair of messenger cables supported in corrugations of the insulator, of a trolley conductor and means for supporting and insulating the conductor. from I the messenger cables at points between the corrugated cylindrical insulators, said means comprisin insulating blocks each of which consists o a lower member having a trolley clamp attached thereto, a cap member; and bolts for clamping the messenger cables between said members.

I t. An electric line hanger for a catenary construction comprising two stationary supportseach of which has a floor flange and bolts atits upper end, and a horizontal sleeve bearing at its lower end, a tube detachably mounted in thesleeve bearings and a cylindrical fluted .or corrugated insulator mounted on the tube between the sleeve supports. 5. An electric line hanger comprising stationary supports having floor flanges at their supported ends, and T-pipe connectors at their opposite ends, a tube loosely mount-- ed in the T-pipe connectors, and a corrugated'cylindrical insulator surrounding the pipe between the supports.

In testimony whereof, we have hereunto subscribed our names this 1st day of June, 1906.

HARRY P. DAVIS. THEODORE VARNEY.

Witnesses CAROLINE E S. MYERS, R. -J. DEARBORN, BIRNEY HINES. 

